@Valerio Bozzolan:, there are caching centres around the world, but these are widely regarded as 'temporary' storage, much like throwing some bytes over a line, it is a 'transitory' element and the legal framework for those types of connections is much more permissible around the world. Basically, their only function is to 'speedup' access, but we could do without them as well. The foundation's primary servers however are housed in the US. This is where the data is 'hosted'. —TheDJ (talk • contribs) 12:32, 20 June 2017 (UTC)

In February of 2016 the Wikimedia foundation started sending information to all of the websites we link to that allow the owner of the website (or someone who hacks the website, or law enforcement with a search warrant / subpoena) to figure out what Wikipedia page the user was reading when they clicked on the external link.

The WMF is not bound by Wikipedia RfCs, but we can use an advisory-only RfC to decide what information, if any, we want to send to websites we link to and then put in a request to the WMF. I have posted such an advisory-only RfC, which may be found here: